LM8262 Dual
RRIO, High Output Current & Unlimited Cap Load Op
Amp in MSOP
LM8262 Dual RRIO, High Output Current & Unlimited Cap Load Op Amp in MSOP
June 2002
General Description
The LM8262 is a Rail-to-Rail input and output Op Amp which
can operate with a wide supply voltage range. This device
has high output current drive, greater than Rail-to-Rail input
common mode voltage range, unlimited capacitive load drive
capability, and provides tested and guaranteed high speed
and slew rate. It is specifically designed to handle the requirements of flat panel TFT panel V
as well as being suitable for other low power, and medium
speed applications which require ease of use and enhanced
performance over existing devices.
Greater than Rail-to-Rail input common mode voltage range
with 50dB of Common Mode Rejection, allows high side and
low side sensing, among many applications, without having
any concerns over exceeding the range and no compromise
in accuracy. In addition, most device parameters are insensitive to power supply variations; this design enhancement is
yet another step in simplifying its usage. The output stage
has low distortion (0.05% THD+N) and can supply a respectable amount of current (15mA) with minimal headroom from
either rail (300mV).
The LM8262 is offered in the space saving MSOP package.
n GBWP21MHz
n Wide supply voltage range2.5V to 22V
n Slew rate12V/µs
n Supply current/channel1.15 mA
n Cap load limitUnlimited
n Output short circuit current+53mA/−75mA
n +/−5% Settling time400ns (500pF, 100mV
n Input common mode voltage0.3V beyond rails
n Input voltage noise15nV/
n Input current noise1pA/
n THD+N
PP
<
step)
0.05%
Applications
n TFT-LCD flat panel V
n A/D converter buffer
n High side/low side sensing
n Headphone amplifier
Unless otherwise specified, all limited guaranteed for TJ= 25˚C, V+= 11V, V−= −11V, VCM= 0V, VO= 0V, and
>
1MΩ to 0V. Boldface limits apply at the temperature extremes.
R
L
SymbolParameterCondition
>
CMVRInput Common-Mode Voltage
CMRR
50dB–−11.3−11.1
Min
(Note 6)
Range
11.1
11.0
A
VOL
V
O
Large Signal Voltage GainVO= 0V to +/−9V,
= 10kΩ
R
L
V
= 0V to +/−9V,
O
=2kΩ
R
L
Output Swing
RL= 10kΩ10.65
High
=2kΩ10.6
R
L
78
74
72
66
10.61
10.55
Output Swing
RL= 10kΩ–−10.98−10.75
Low
=2kΩ–−10.91−10.65
R
L
I
SC
I
S
Output Short Circuit CurrentSourcing to ground
Supply CurrentNo load, VCM= 0V–2.54
SRSlew Rate
= 200mV (Note 10)
V
ID
Sinking to ground
= 200mV (Note 10)
V
ID
= +1, VI= 16V
A
V
PP
40
25
65
55
10
(Note 8)
f
U
Unity Gain FrequencyVI= 10mV, RL=2kΩ–13–MHz
GBWPGain-Bandwidth Productf = 50KHz18
16
Phi
e
n
m
Phase MarginVI= 10mV–58–Deg
Input-Referred Voltage Noisef = 2KHz, RS=50Ω–15–nV/
8
Typ
(Note 5)
(Note 6)
11.3–V
85–
79–
10.77–
10.69–
60–
100–
15–V/µs
24–MHz
Max
−11.0
−10.65
−10.6
5
LM8262
Units
V
dB
V
V
mA
mA
i
n
t
S
Input-Referred Current Noisef = 2KHz–1–pA/
Settling Time (+/−1%, AV=
+1)
THD+NTotal Harmonic Distortion
+Noise
CT
REJ
Cross-Talk Rejectionf = 5MHz, Driver
Positive Step, 5V
Negative Step, 5V
R
=1kΩ, f = 10KHz,
L
= +2, 15VPPswing
A
V
= 10kΩ
R
L
PP
PP
–320–
–600–
ns
–0.01–%
–68–dB
www.national.com5
Page 6
+/−11V Electrical Characteristics (Continued)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Rating indicate conditions for which the device is
LM8262
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5kΩ in series with 100pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150˚C.
Note 4: The maximum power dissipation is a function of T
P
=(TJ(max) - TA)/ θJA. All numbers apply for packages soldered directly onto a PC board.
D
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Positive current corresponds to current flowing into the device.
Note 8: Slew rate is the slower of the rising and falling slew rates. Connected as a Voltage Follower.
Note 9: Machine Model, 0Ω is series with 200pF.
Note 10: Short circuit test is a momentary test. See Note 11.
Note 11: Output short circuit duration is infinite for V
Note 12: Offset voltage average drift determined by dividing the change in V
(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
J
≤ 6V at room temperature and below. For V
S
at temperature extremes into the total temperature change.
OS
>
6V, allowable short circuit duration is 1.5ms.
S
Typical Performance Characteristics T
vs. VCMfor 3 Representative UnitsVOSvs. VCMfor 3 Representative Units
V
OS
2002103020021029
VOSvs. VCMfor 3 Representative UnitsVOSvs. VSfor 3 Representative Units
= 25˚C, Unless Otherwise Noted
A
20021031
www.national.com6
20021034
Page 7
LM8262
Typical Performance Characteristics T
vs. VSfor 3 Representative UnitsVOSvs. VSfor 3 Representative Units
V
OS
2002103520021033
IBvs. V
CM
= 25˚C, Unless Otherwise Noted (Continued)
A
IBvs. V
S
ISvs. V
CM
20021024
ISvs. V
2002102720021028
CM
20021036
www.national.com7
Page 8
Typical Performance Characteristics T
LM8262
I
vs. V
S
CM
ISvs. VS(NPN side)Gain/Phase vs. Frequency
= 25˚C, Unless Otherwise Noted (Continued)
A
ISvs. VS(PNP side)
2002106820021025
20021026
Unity Gain Frequency vs. V
S
2002100720021008
www.national.com8
Phase Margin vs. V
20021018
S
Page 9
LM8262
Typical Performance Characteristics T
Unity Gain Freq. and Phase Margin vs. V
S
20021004
= 25˚C, Unless Otherwise Noted (Continued)
A
www.national.com9
Page 10
Physical Dimensions inches (millimeters)
unless otherwise noted
8-Pin MSOP
NS Package Number MUA08A
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
LM8262 Dual RRIO, High Output Current & Unlimited Cap Load Op Amp in MSOP
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
labeling, can be reasonably expected to result in a
significant injury to the user.
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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